I know Steele Rubber will revulcanize for $135. Kinda steep so you might check around. Here is the link:
Caddy Daddy has a repro for $79, and rebuilt for $145, plus $100 core. I purchased the repro and it looked pretty good, everything lines up. It is presently on the transmission, but the driveline is still out of the car, so I have not used it under power yet.
Here's a link to the repro --> https://www.caddydaddy.com/shop-parts.html?cat=580&prod_year=498
Thanks. I don't think my current one is bad, but it is still original and there's no reason not to freshen it up. Question: Do you have to take the driveshaft out to replace?
No, You shouldn't have to. Loosen all four bolts first, then remove them. Get a small piece of plywood or something that fits against the transmission oil pan, then jack it up a little with the wood and a floor jack. You should be able to slide the old mount right out. I don't think you would even need to disturb the crossmember itself.
In my case, the trans had a massive leak in that location, and the oil destroyed the rubber part of the mount. If that seal is bad, the driveshaft DOES have to come out for that.
One more dumb question. Does it "relieve" the weight on the tranny to loosen the driveshaft center support bolts thereby allowing a bit of upward movement of the drive shaft when the tranny is lifted? Or am I overestimating the amount of travel required of the transmission in order to permit the removal of the mount?
That would probably be a good idea. It would provide some slack for movement.